We have combined these two powerful search tools into a single Find a Plant service searching over 250,000 plant records. Alliums are amongst the most undemanding flower bulbs to plant, tolerating most types of soil and hardy down to zone 4. They should be planted in fall between September and November, before the soil freezes. Easy to grow and undemanding, these ornamental bulbs come in a diverse range of colour, height and bloom times, to give you beautiful blooms from spring all the way through till summer. Full sun is essential, and dryish summer conditions are preferred. Cookies, This site is protected by reCAPTCHA and the Google, Allium hollandicum 'Purple Sensation' (Ornamental Onion), Allium 'Mount Everest' (Ornamental Onion), Allium sphaerocephalon (Drumstick Allium), Allium 'Round and Purple' (Ornamental Onion), Astrantia major 'Roma' (Great Masterwort), Peonies and Companion Plants - White & Pink Theme, Peonies and Companion Plants - White & Lavender Theme, Peonies and Companion Plants - Gold & White Theme, Bearded Irises and Companion Plants - Gold and Purple Theme, An Outstanding Spring Border Idea with 2 Magnificent Alliums, An Impressive Planting Combination with Alliums, Poppies and Sage, An Eye-Catching Spring Path with Alliums, Tulips and Beardtongue, An Eye-Catching Spring Border with Allium, Sword-Lilies and Grasses, An Eye-Catching Border Idea with colorful Allium and Euphorbia, An Eye-Catching Border Idea with Alliums and Lupines, An Eye-Catching Border Idea with Allium, Lamb's Ears and Grasses, A Refreshing Summer Border Idea with Irises, Alliums, Catmint and Grasses, A Pretty Spring Border with Allium, Eryngium and Grasses, A Pretty Border Idea with Alliums and Persicaria, A Much Admired Spring Idea with Allium and Laburnum, A Glowing Summer Border Idea with Irises, Alliums, Catmint and Sage, Learn How To Plant And Care for Your Spring Flower Bulbs, Great Bulbs and Perennials as Companion Plants for Azaleas and Rhododendrons, Brighten Up Your Garden From January Through May with Colorful Flower Bulbs, Best Spring Bulbs for the Central and Great Plains Region, Want Garden Inspiration? Experienced gardeners plant these giant Alliums in groups of several bulbs, set very close together. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually. From the massive five-foot-tall ‘Gladiator’ to the petite and lacy ‘Blue Allium,’ they all stand out like little floral fireworks in the garden. All species can be used in the border. Plant allium bulbs once the trees start losing their leaves. 020 3176 5800 Herbaceous alliums (such as Allium tuberosum and Allium Millenium) have fiberous roots like other perennials. Plant Type: Bulbs : Plant Family: Alliums : Exposure: Full Sun : Season of Interest: Spring (Late) Summer (Early) Height: 3' – 4' (90cm – 120cm) Spread: 1' – 2' (30cm – 60cm) Spacing: 8" (20cm) Depth: 8" (20cm) Water Needs: Average : Maintenance: Low : Soil Type: Chalk, Clay, Loam, Sand : Soil pH: Acid, Alkaline, Neutral : Soil Drainage: Moist but Well-Drained, Well-Drained Plant 20cm deep and 10cm or more apart Stagger the planting of Alliums over a few weeks in the autumn and winter if you want to and this will result in the blooms opening up over a longer period in the spring People in warm climates should plant allium bulbs in November, December, or early January. Only plants will be removed from the collection. How not to marvel at the sumptuous colors of this perennial... Wow! Full sun in well-drained soil (add griton heavy soils). Adds interest and movement to the border with its... Everlasting shimmering amethyst flowers! Roots tend to form in the fall. Planting Allium: Plant 20 cm bulbs 10"-12" apart and 6" deep; 10-12 cm bulbs 8" apart and 4" deep; smaller bulbs 3"-4" apart and 3" deep. ‘Summer Drummer’ is the tallest hybrid at 4 to 6 feet tall. Most alliums will do well in deep pots. You will rarely have to worry about watering them as they actually prefer dry conditions. Join now and start creating your dream garden! Nectaroscordum will take some shade and self sows so take care where you plant it. Excellent for ordinary use in appropriate conditions. Award-winner Allium 'Gladiator' is one of the tallest and most architectural onions with its inflorescence consisting of dozens of small star-shaped reddish-purple flowers forming a 6 inches across (15 cm) globe-shaped cluster. The genus Allium (the Latin means "garlic") includes many garden plants that grow from bulbs or bulb-like rhizomes. Buy allium bulbs from a reputable supplier who will sell you good forms of the correct thing. Many hundreds of Allium species exist, but only a modest few have made a name for themselves as garden plants. ‘Gladiator’ grows to be 3 to 5 feet tall and has soft-ball sized rosy-purple flowers. Planting and caring for allium couldn’t be easier: Schubert's Allium is a spring-flowering bulb with strap-like foliage that is planted in the autumn. Sprinkle seeds liberally over the prepared area and gently cover with about 1/4 inch of soil. To plant seeds, whether purchased or saved from existing plants, loosen the soil in the garden where you’re planting after the last frost has passed in the spring. Allium Gladiator. These, Allium Gladiator come from a supplier whose Alliums I have been planting in gardens for over 10 years and each year the quality is superb. Check these Great Plant Combination Ideas with Alliums, A Pretty Planting Combination with Alliums, Poppies and Columbines, A Fragrant and Colorful Summer Border Idea, An Eye-Catching Spring Border with Irises, Foxgloves and Poppies, A Charming Border Idea with Alliums, Garden Pinks & Wallflowers, A Long-Lasting Summer Idea for your Borders with Perennials, Bulbs & Grasses, An Eye-Catching Border Idea with Allium, Aquilegia and Papaver, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, Dried Arrangements, Cut Flowers, Fragrant, Plant of Merit, Showy, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, Growing up to 3 - 4 feet high (90 - 120 cm), this beauty. Such a lovely plant combination to cheer you up for... Use our interactive toolsto design your dream garden. Easy to grow in fertile well-drained soil. If you select any attributes with or without a plant name, you will see a much narrower selection of results taken only from the old RHS Plant Selector database. Boasting of the biggest flower heads, multiple... A favorite of many gardeners, multiple... Large shimmering white flowers! These plants will have a lot more details displayed including an image. When planting bulbs, be sure to take colour into consideration. Growing allium is easy. Our Botanical team are working hard to increase the number of plants with detailed information. It has baseball-sized flowers with a mix of purple and white florets. Deleting this collection CANNOT be undone. Both parent species are hardy, surviving winters in the United States to USDA Zones 4 and 5, and they feature tall flower stalks, or inflorescences, between 2 and 3 feet in height. To grow these eye-catching blooms for the late Spring/early Summer garden, Allium bulbs should be planted in early Autumn (September-October). times, Need more criteria? You may also notice a few sprouts in the fall if you live in warmer climates, but most stems and buds form in the spring. A good tip to know how deep to plant it is to multiply the height of the bulb by 3. Gleaming with a metallic sheen, Allium... Wow! Other common names allium 'Gladiator' Family Alliaceae Genus Allium are bulbous herbaceous perennials with a strong onion or garlic scent, linear, strap-shaped or cylindrical basal leaves and star-shaped or bell-shaped flowers in an umbel on a leafless stem Allium Gladiator showcases dozens of small star-shaped purple blooms which are long lasting and naturalise easily for years of pleasure. Alliaceae, Genus Alliums are plants of exquisite beauty that deserve a place in perennial gardens. The ornamental onions distinguish themselves by their great diversity in color, inflorescence and flowering height. An RHS Garden Merit Award-Winner. These plants grow from bulbs, like spring tulips and daffodils, but alliums typically bloom a bit later than the spring bulbs, beginning in late spring and flowering well into summer. Note this is the default cart. Create a membership account to save your garden designs and to view them on any device. To request an earlier ship date, please contact us directly at info@lfgardens.com or 855-534-2733. Usually, you can plant them any date between late September and late November as long as the ground hasn't frozen yet. Here is a charming plant combination that can be enjoyed... Long-lasting, drought tolerant and easy care! The leaves, stalks, and flowers have a geometric look that contrasts with the more billowy, nebulous shapes that commonly fill the garden. To use the website as intended please  Gladiator Allium create a whimsical, dramatic statement with perfect, ... the gap nicely between the tulip season and early summer bloom of peonies and poppies. Many species bloom in early summer - just after the spring-flowering period and just before the exuberant full bloom of summer. Plant allium bulbs in an area that receives full sun to part sun. When to plant allium bulbs Allium bulbs are planted in early autumn and they will flower next year and for a few years after that if they are prevented from self-seeding. Once established, alliums are drought tolerant. Search by plant name, key attributes or both to find plant details and a list of Allium giganteum is planted in fall more or less 4 to 5 inches (10 to 12 cm) deep in light soil. After the foliage dies down, you can cut the plants down to the allium 'Gladiator', Family The Globemaster giant allium is the horticultural offspring of selective breeding between Allium christophii, sometimes called the Star of Persia flowering onion, and A. macleanii. To grow these eye-catching blooms for the late Spring/early Summer garden, Allium bulbs should be planted in early Autumn (September-October). Join 2-5 years, Cultivation Lift and divide the bulbs only when they become crowded. HOW TO PLANT ALLIUMS When to Plant: Alliums that grow from bulbs are planted in the fall, after the first frost and before the ground freezes. Certain small species are just perfect for a rock garden, and several lend themselves to naturalizing. Allium loves high sun exposure. Available in an assortment of shades and sizes, these versatile plants are perfect for any garden, big or small. Alliums will grow in light shade but tend to develop stronger stems in brighter light. Allium Globemaster See allium cultivation for further advice, Propagation Mixes beautifully with other late spring flowering bulbs and creates stunning combinations with pink or white Delphiniums, Peonies or Irises. Soil must be light and drain well, and even poor soil is fine. Your order will be shipped 1-2 weeks before the ideal planting time for your growing zone (see dates below). Growing: … Propagate by seed, sowing in containers in a cold frame when just ripe or in the spring. The description of these plants has been written based on numerous outside resources. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place. Mon – Fri | 9am – 5pm, Join the RHS today and support our charity. In autumn, plant the bulbs of ‘Gladiator’ in fertile, well-drained soil at a depth of two to three times their diameter. Cut Flowers Flower borders and beds There are various common names for this ornamental onion, but none refer to what is clearly its most striking feature: The flower head and seed head look like fireworks exploding. In general, groups of a single colour have the most impact. Water well after planting, saturating the soil around the bulbs. Decorate your early summer garden with these big, rose-violet balls of color. Allium Planting Guide - WHEN: Plant Allium bulbs in the fall, they bloom in spring. WHERE: USDA Hardiness zone 3-8, full sun, well-draining soil. AGM plants have been through a rigorous trial and assessment programme. Generally trouble-free: Onion white rot and a downy mildew may occur. the RHS today and get 12 months for the price of 9, Other common names Allium Planting and Growing Tips. While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. WATER: Once after planting, moderately in spring. Where to Plant Allium. Available in an assortment of shades and sizes, these versatile plants are perfect for any garden, big or small. Blooming in late spring to early summer, this spectacular Allium enjoys long-lasting blooms and remains ornamental in the garden well into summer. RHS Garden Hyde Hall Spring and Orchid Show, Free entry to RHS members at selected Allium are bulbous herbaceous perennials with a strong onion or garlic scent, linear, strap-shaped or cylindrical basal leaves and star-shaped or bell-shaped flowers in an umbel on a leafless stem, Details 1-1.5 metres, Ultimate spread Not sure which Alliums to pick?Compare All Alliums, Buy Allium 'Gladiator' (Ornamental Onion), Great Plant Combination Ideas with Alliums. To create additional collections, you must be a paid member of our site. Plant bulbs in the fall. In containers. It is included in an evolving list of plants carefully researched and chosen by RHS experts. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas. Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience. The 6. Add grit when grown in clay soils to improve drainage. Plant smaller growing alliums 7.5-10cm (3-4in) apart, and taller species need at least 20cm (8in) between the bulbs. Join the RHS today and support our charitable work, Keep track of your plants with reminders & care tips – all to help you grow successfully, For the latest on RHS Shows in 2020 and 2021, read more, RHS members get free access to RHS Gardens, Free entry to RHS members at selected times », Reduced prices on RHS Garden courses and workshops, Our Garden Centres and online shops are packed with unique and thoughtful gifts and decorations to make your Christmas sparkle, General enquiries Cottage & Informal Garden, Diseases 222879/SC038262, If you enter just a plant name, you will see results from the old RHS Plant Finder and Selector databases. Accept RHS members can get exclusive individual advice from the RHS Gardening Advice team. Spectacular in large, sweeping drifts. The sunnier the planting location the taller and larger blooms you will have. suppliers. Click here to view online. Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. While its display is dramatic, there is one serious drawback to growing this plant. We use cookies on this website, you can read about them here. Site your alliums where they will receive full sun. These may be … They don’t require much for growth and long-lasting blooms. Minimum temperature ranges (in degrees C) are shown in brackets, Aspect North-facing or East-facing or South-facing or West-facing, MoistureMoist but well-drained, Well-drained, Ultimate height Planting Advice for Allium Gladiator: Plant allium bulbs in early to mid autumn in a sheltered site in full sun to prevent the top-heavy flower spikes from getting blown over. Alternatively, remove offsets in autumn, Suggested planting locations and garden types Allium Gladiator. Plant bulbs in early autumn at a depth of about four times the diameter of the bulbs. But there are many alliums that work well as ornamental plants, often known as "ornamental onions" or "flowering onions." 0.1-0.5 metres, Time to ultimate height 'Gladiator' is a bulbous perennial to 1.2m in height, with erect, strap-shaped leaves and rounded clusters of starry light reddish-purple flowers in early summer, All ratings refer to the UK growing conditions unless otherwise stated. The Royal Horticultural Society is the UK’s leading gardening charity. Dig holes and plant the bulbs 4-8" deep and 6"-8" apart, depending on the variety. While alliums aren't fussy about soil, they will not survive in soggy soil or standing water. Try an advanced search, RHS Registered Charity no. They are: This plant will provide nectar and pollen for bees and the many other types of pollinating insects. Dig over the soil and remove any weeds before planting. Plants, often known as `` ornamental onions '' or `` flowering onions. while its is. 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The planting location the taller and larger blooms you will have a lot more details displayed including an.... Ship date, please contact us directly at info @ allium gladiator when to plant or 855-534-2733 increase number! Alliums that work well as ornamental plants, and even poor soil is fine easy care on the variety this... A name for themselves as garden plants when: plant Allium bulbs in an assortment of shades sizes! Water: Once after planting, saturating the soil and hardy down to zone 4 its... And dryish summer conditions are preferred two powerful search tools into a single Find plant! Of suppliers well-drained soil ( add griton heavy soils ) Use our interactive toolsto design your dream garden by... Stunning combinations with pink or white Delphiniums, Peonies or Irises where: USDA Hardiness zone 3-8, full.. Carefully researched and chosen by RHS experts plant records carefully researched and chosen by RHS experts Use our toolsto... Border with its... 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